BuildLibraryConstructorsTask to build all constructors of all library classes.

pkg/analyzer/lib/src/task/dart.dart

 // Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library analyzer.src.task.dart;
 
 import 'dart:collection';
 import 'dart:math' as math;
 
 import 'package:analyzer/src/generated/ast.dart';
@@ skipping 45 matching lines @@
  * The result is only available for targets representing a Dart library.
  */
 final ResultDescriptor<List<AnalysisError>> BUILD_LIBRARY_ERRORS =
     new ResultDescriptor<List<AnalysisError>>(
         'BUILD_LIBRARY_ERRORS', AnalysisError.NO_ERRORS,
         contributesTo: DART_ERRORS);
 
 /**
  * The [ClassElement]s of a [LibraryUnitTarget].
  */
-final ResultDescriptor<List<ClassElement>> CLASS_ELEMENTS =
-    new ResultDescriptor<List<ClassElement>>('CLASS_ELEMENTS', null);
+final ListResultDescriptor<ClassElement> CLASS_ELEMENTS =
+    new ListResultDescriptor<ClassElement>('CLASS_ELEMENTS', null);
 
 /**
  * The [ConstructorElement]s of a [ClassElement].
  */
 final ResultDescriptor<List<ConstructorElement>> CONSTRUCTORS =
     new ResultDescriptor<List<ConstructorElement>>('CONSTRUCTORS', null);
 
 /**
  * The errors produced while building a [ClassElement] constructors.
  *
@@ skipping 63 matching lines @@
  * The partial [LibraryElement] associated with a library.
  *
  * [LIBRARY_ELEMENT4] plus [RESOLVED_UNIT4] for every unit.
  *
  * The result is only available for targets representing a Dart library.
  */
 final ResultDescriptor<LibraryElement> LIBRARY_ELEMENT5 =
     new ResultDescriptor<LibraryElement>('LIBRARY_ELEMENT5', null);
 
 /**
+ * The partial [LibraryElement] associated with a library.
+ *
+ * Implicit constructors are built for every [ClassElement] requiring them.
+ *
+ * The result is only available for targets representing a Dart library.
+ */
+final ResultDescriptor<LibraryElement> LIBRARY_ELEMENT6 =
+    new ResultDescriptor<LibraryElement>('LIBRARY_ELEMENT6', null);
+
+/**
  * The errors produced while resolving type names.
  *
  * The list will be empty if there were no errors, but will not be `null`.
  *
  * The result is only available for targets representing a Dart library.
  */
 final ResultDescriptor<List<AnalysisError>> RESOLVE_TYPE_NAMES_ERRORS =
     new ResultDescriptor<List<AnalysisError>>(
         'RESOLVE_TYPE_NAMES_ERRORS', AnalysisError.NO_ERRORS,
         contributesTo: DART_ERRORS);
@@ skipping 867 matching lines @@
    * Create a [BuildFunctionTypeAliasesTask] based on the given [target] in
    * the given [context].
    */
   static BuildFunctionTypeAliasesTask createTask(
       AnalysisContext context, AnalysisTarget target) {
     return new BuildFunctionTypeAliasesTask(context, target);
   }
 }
 
 /**
+ * An artifitial task that does nothing except to force building constructors
+ * for for the defining and part units of a library.
+ */
+class BuildLibraryConstructorsTask extends SourceBasedAnalysisTask {
+  /**
+   * The name of the [LIBRARY_ELEMENT5] input.
+   */
+  static const String LIBRARY_INPUT = 'LIBRARY_INPUT';
+
+  /**
+   * The task descriptor describing this kind of task.
+   */
+  static final TaskDescriptor DESCRIPTOR = new TaskDescriptor(
+      'BuildLibraryConstructorsTask', createTask, buildInputs,
+      <ResultDescriptor>[LIBRARY_ELEMENT6]);
+
+  BuildLibraryConstructorsTask(
+      InternalAnalysisContext context, AnalysisTarget target)
+      : super(context, target);
+
+  @override
+  TaskDescriptor get descriptor => DESCRIPTOR;
+
+  @override
+  void internalPerform() {
+    LibraryElement library = getRequiredInput(LIBRARY_INPUT);
+    outputs[LIBRARY_ELEMENT6] = library;
+  }
+
+  /**
+   * Return a map from the names of the inputs of this kind of task to the task
+   * input descriptors describing those inputs for a task with the
+   * given [target].
+   */
+  static Map<String, TaskInput> buildInputs(Source libSource) {
+    return <String, TaskInput>{
+      LIBRARY_INPUT: LIBRARY_ELEMENT5.of(libSource),
+      'resolvedConstructors':
+          CLASS_ELEMENTS.of(libSource).toListOf(CONSTRUCTORS),
+    };
+  }
+
+  /**
+   * Create a [BuildLibraryConstructorsTask] based on the given [target] in
+   * the given [context].
+   */
+  static BuildLibraryConstructorsTask createTask(
+      AnalysisContext context, AnalysisTarget target) {
+    return new BuildLibraryConstructorsTask(context, target);
+  }
+}
+
+/**
  * A task that builds a library element for a Dart library.
  */
 class BuildLibraryElementTask extends SourceBasedAnalysisTask {
   /**
    * The name of the input whose value is the defining [RESOLVED_UNIT1].
    */
   static const String DEFINING_UNIT_INPUT = 'DEFINING_UNIT_INPUT';
 
   /**
    * The name of the input whose value is a list of built [RESOLVED_UNIT1]s
    * of the parts sourced by a library.
    */
   static const String PARTS_UNIT_INPUT = 'PARTS_UNIT_INPUT';
 
   /**
    * The task descriptor describing this kind of task.
    */
   static final TaskDescriptor DESCRIPTOR = new TaskDescriptor(
       'BuildLibraryElementTask', createTask, buildInputs, <ResultDescriptor>[
     BUILD_LIBRARY_ERRORS,
+    CLASS_ELEMENTS,
     LIBRARY_ELEMENT1,
     IS_LAUNCHABLE,
     HAS_HTML_IMPORT
   ]);
 
   /**
    * The constant used as an unknown common library name in parts.
    */
   static const String _UNKNOWN_LIBRARY_NAME = 'unknown-library-name';
 
@@ skipping 113 matching lines @@
     libraryElement.definingCompilationUnit = definingCompilationUnitElement;
     libraryElement.entryPoint = entryPoint;
     libraryElement.parts = sourcedCompilationUnits;
     for (Directive directive in directivesToResolve) {
       directive.element = libraryElement;
     }
     if (sourcedCompilationUnits.isNotEmpty) {
       _patchTopLevelAccessors(libraryElement);
     }
     //
+    // Prepare all class elements.
+    //
+    List<ClassElement> classElements = libraryElement.units
+        .map((CompilationUnitElement unitElement) => unitElement.types)
+        .expand((List<ClassElement> unitClassElements) => unitClassElements)
+        .toList();
+    //
     // Record outputs.
     //
     outputs[BUILD_LIBRARY_ERRORS] = errors;
+    outputs[CLASS_ELEMENTS] = classElements;
     outputs[LIBRARY_ELEMENT1] = libraryElement;
     outputs[IS_LAUNCHABLE] = entryPoint != null;
     outputs[HAS_HTML_IMPORT] = hasHtmlImport;
   }
 
   /**
    * Add all of the non-synthetic [getters] and [setters] defined in the given
    * [unit] that have no corresponding accessor to one of the given collections.
    */
   void _collectAccessors(Map<String, PropertyAccessorElement> getters,
@@ skipping 573 matching lines @@
   }
 
   /**
    * Return a map from the names of the inputs of this kind of task to the task
    * input descriptors describing those inputs for a task with the
    * given [target].
    */
   static Map<String, TaskInput> buildInputs(Source libSource) {
     return <String, TaskInput>{
       LIBRARY_INPUT: LIBRARY_ELEMENT4.of(libSource),
-      'resolvedDefiningUnit':
-          RESOLVED_UNIT4.of(new LibraryUnitTarget(libSource, libSource)),
-      'resolvedPartsUnit': INCLUDED_PARTS.of(libSource).toMap((Source source) =>
+      'resolvedUnits': UNITS.of(libSource).toMap((Source source) =>
           RESOLVED_UNIT4.of(new LibraryUnitTarget(libSource, source)))
     };
   }
 
   /**
    * Create a [ResolveLibraryTypeNamesTask] based on the given [target] in
    * the given [context].
    */
   static ResolveLibraryTypeNamesTask createTask(
       AnalysisContext context, AnalysisTarget target) {
@@ skipping 120 matching lines @@
   }
 
   /**
    * Create a [ScanDartTask] based on the given [target] in the given [context].
    */
   static ScanDartTask createTask(
       AnalysisContext context, AnalysisTarget target) {
     return new ScanDartTask(context, target);
   }
 }